JP2021030935A - Work machine - Google Patents

Abstract

To eliminate the necessity of cumbersome detachment of a bonnet from a work machine-main body for maintenance work, in a conventional work machine such as a rice planter.SOLUTION: A rice planter is equipped with: a bonnet 11, mounted on a work machine-main body 10 openably and closably, which covers an engine 20; and a bonnet arm 100 that is tilted down when the bonnet 11 is closed and is raised up to support the opened bonnet 11 from below, when the bonnet 11 is opened. One end 101 of the bonnet arm 100 is turnably mounted on a bonnet arm mounting tool 110 fixed to the work machine-main body 10. In an upper surface view, with respect to a straight line in a longitudinal direction of the work machine-main body passing on the bonnet arm mounting tool 110, a bonnet arm holder 120 and a control panel 160 are positioned oppositely to each other.SELECTED DRAWING: Figure 2

Description

The present invention relates to a working machine such as a rice transplanter.

A four-row planting walk-behind rice transplanter having a pair of left and right handles for a walking worker is known (see, for example, Patent Document 1).

In such a rice transplanter, a bonnet covering the engine is attached to the main body of the work machine.

Japanese Unexamined Patent Publication No. 2014-138559

However, working machines such as the conventional rice transplanters described above often require troublesome bonnet removal from the working machine body for maintenance work, for example.

In consideration of the above-mentioned conventional problems, it is an object of the present invention to provide a working machine capable of eliminating the troublesome removal of a bonnet from the working machine main body for maintenance work, for example.

The first aspect of the present invention includes a bonnet (11) that covers the engine (20) and is attached to the working machine main body (10) so as to be openable and closable.
A bonnet arm (100) that is laid down when the bonnet (11) is closed and is erected when the bonnet (11) is open to support the opened bonnet (11) from below.
A bonnet arm holder (120) attached to the work machine main body (10), which engages with the bonnet arm (100) when the bonnet arm (100) is laid down,
With
One end (101) of the bonnet arm (100) is rotatably attached to the bonnet arm attachment (110) fixed to the working machine main body (10).
A work machine characterized in that the bonnet arm holder (120) and the control panel (160) are located opposite to each other with respect to a straight line in the front-rear direction of the work machine body passing through the bonnet arm attachment (110) in a top view. Is.

The second aspect of the present invention includes a working machine main body side male member (130) attached to the working machine main body (10).
A male member (140) on the bonnet arm side attached to the other end (102) of the bonnet arm (100),
A female member (150) attached to the bonnet (11) and
With
When the bonnet (11) is closed, the male member (130) on the working machine body side is inserted into the female member (150).
When the bonnet (11) is opened and the bonnet arm (100) is erected, the male member (140) on the bonnet arm side is inserted into the female member (150).
The first working machine of the present invention is characterized in that the insertion direction of the male member (140) on the bonnet arm side is different from the insertion direction of the male member (130) on the main body side of the working machine.

The third invention is the second working machine of the present invention, characterized in that the shape of the female member (150) is the shape of a bifurcated fork that opens downward.

According to the first invention, for example, it is possible to eliminate the troublesome removal of the bonnet from the working machine main body for maintenance work.

According to the second invention, in addition to the effect of the first invention, it is possible to simplify the member configuration.

According to the third invention, in addition to the effect of the second invention, it is possible to further simplify the member configuration.

Left side view of the rice transplanter according to the embodiment of the present invention (A) Partial plan view of the vicinity of the bonnet arm of the rice transplanter according to the embodiment of the present invention, (b) Partial left side view of the vicinity of the bonnet of the rice transplanter of the embodiment of the present invention. Schematic partial plan view of the vicinity of the bonnet arm attachment of the rice transplanter of the modified example of the embodiment of the present invention. Schematic partial perspective view of the vicinity of the female member of the rice transplanter according to the embodiment of the present invention. Left side view of a portion of the rice transplanter in the vicinity of the traveling wheel of the modified example of the embodiment of the present invention. Partial rear view of the vicinity of the traveling wheel of the rice transplanter of the modified example of the embodiment in the present invention. Partial plan view of the vicinity of the traveling wheel of the rice transplanter of the modified example of the embodiment in the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

The rice transplanter of the present embodiment is an example of the working machine in the present invention.

First, the configuration and operation of the rice transplanter according to the present embodiment will be specifically described with reference to FIG. 1.

Here, FIG. 1 is a left side view of the rice transplanter according to the embodiment of the present invention.

The rice transplanter of the present embodiment is a four-row planting walk-type rice transplanter having a pair of left and right handles 91 for a walking worker.

First, the basic configuration and operation of the rice transplanter of the present embodiment will be described. Therefore, the configuration and operation related to the bonnet arm 100 will be described in detail later.

An engine 20, a transmission case 40, and the like are provided below the bonnet 11 at the front of the work machine main body 10. A pair of left and right traveling wheels 51 are supported behind the transmission case 40.

A spare seedling frame stand 80 is provided above the pair of left and right traveling wheels 51.

The planting device 70 is a device for planting seedlings.

The ground leveling float device 60 is a device for leveling the field.

A fuel tank 30 having a fuel tank cap is provided above the engine 20.

The rotational power of the engine 20 is transmitted to the transmission case 40. The rotational power decelerated by the transmission case 40 is transmitted to the traveling device 50 having a pair of left and right traveling wheels 51 and the planting device 70.

Behind the pair of left and right traveling wheels 51, the base of the handle structure 90 of the handle 91 to which the main speed change lever 92 and the like are attached is connected.

Next, the configuration and operation of the rice transplanter according to the present embodiment will be described more specifically with reference to FIGS. 2 (a) and 2 (b).

Here, FIG. 2A is a partial plan view of the vicinity of the bonnet arm 100 of the rice transplanter according to the embodiment of the present invention, and FIG. 2B is a partial plan view of the vicinity of the bonnet 11 of the rice transplanter of the embodiment of the present invention. It is a partial left side view.

In FIG. 2B, both the open bonnet 11 and the closed bonnet 11 are shown at the same time, but the laid-down bonnet arm 100 is not shown, and the erected bonnet arm 100 is shown. Only shown.

The bonnet arm 100 is laid down when the bonnet 11 which covers the engine 20 and is openably attached to the working machine main body 10 is closed, and is erected and opened when the bonnet 11 is opened. It is an arm that supports from below.

For example, the bonnet arm 100 is a substantially straight metal rod member.

The bonnet 11 is a resin molding member or the like that is rotatably attached to the work machine main body 10 at the bonnet attachment portion at the rear of the engine 20 so as to comply with the bonnet front opening specification, and the bonnet open mechanism is a light. It is realized by using the headlight coupler connection by the harness 12. Therefore, for example, maintenance work such as engine plug replacement can be easily performed without troublesome removal of the bonnet 11 from the work machine main body 10.

The bonnet arm holder 120 is a holder attached to the working machine main body 10 that locks with the bonnet arm 100 when the bonnet arm 100 is laid down.

For example, the bonnet arm holder 120 is a resin patchon member bent into a substantially U shape. Since the rod portion of the bonnet arm 100 is firmly inserted into the bent portion of the bonnet arm holder 120 so as not to move, rattling of the bonnet arm 100 due to resonance with engine vibration is suppressed.

One end 101 of the bonnet arm 100 is rotatably attached to the bonnet arm attachment 110 fixed to the working machine main body 10.

For example, the bonnet arm attachment 110 is a metal plate member bent into a substantially L shape.

As shown in FIG. 3, which is a schematic partial plan view of the vicinity of the bonnet arm attachment 110 of the rice transplanter of the modified example of the embodiment of the present invention, one end 101 is bent into a substantially U shape. The compression spring 101a and the compression spring retaining 101b may be rotatably fitted into the holes provided in the L-shaped vertical surface of the bonnet arm attachment 110. Since the compression spring 101a is inserted between the compression spring retaining 101b and the bonnet arm attachment 110, rattling of one end 101 due to resonance with engine vibration is suppressed.

The bonnet arm holder 120, which is the bonnet arm support portion, is provided not only behind the bonnet arm attachment 110, which is the bonnet fixing portion, but also on the outside of the bonnet arm attachment 110 in the left-right direction of the working machine body. Therefore, the stability of the bonnet 11 when the bonnet 11 is opened is improved.

Since the bonnet arm 100 is supported from the upper surface of the machine body, the stability of the bonnet arm 100 is improved.

In the top view, the bonnet arm holder 120 and the control panel 160 are located opposite to each other with respect to a straight line in the front-rear direction of the working machine body passing through the bonnet arm attachment 110.

Since the bonnet arm 100 that is laid down does not interfere with the control panel 160 for the accelerator member, the choke member, etc., it is not necessary to suppress the length of the bonnet arm 100, and even if the bonnet arm 100 is long, the bonnet open space is open. Sufficiently secured.

The male member 130 on the work machine main body side is a male member attached to the work machine main body 10.

The male member 140 on the bonnet arm side is a male member attached to the other end 102 of the bonnet arm 100.

The female member 150 is a female member attached to the bonnet 11.

For example, the female member 150 is a resin patchon member.

When the bonnet 11 is closed, the male member 130 on the machine body side is inserted into the female member 150.

For example, the male member 130 on the work machine body side is a metal bonnet close fixing pin member. The male member 130 on the working machine body side is supported by the L-shaped horizontal plane of the bonnet arm fitting 110 that also functions as a fitting for the male member 130 on the working machine body side so that the configuration of the stay member is simplified. ing.

When the bonnet 11 is opened and the bonnet arm 100 is erected, the male member 140 on the bonnet arm side is inserted into the female member 150.

For example, the male member 140 on the bonnet arm side is a metal bonnet open fixing pin member. A C (Corner) cut is provided at the pin tip of the male member 140 on the bonnet arm side that protrudes in the direction perpendicular to the rod longitudinal direction of the bonnet arm 100 so that the male member 140 can be easily inserted into the female member 150. ..

Since not only the male member 130 on the work machine body side but also the male member 140 on the bonnet arm side is inserted into the female member 150, the member configuration is simplified.

The insertion direction of the male member 140 on the bonnet arm side is different from the insertion direction of the male member 130 on the work machine body side.

The shape of the female member 150 is the shape of a bifurcated fork that opens downward.

As shown in FIG. 4, which is a schematic partial perspective view of the vicinity of the female member 150 of the rice transplanter according to the embodiment of the present invention, the male working machine main body is inserted upward as indicated by the arrow Y. Since not only the outer diameter of the pin of the mold member 130 but also the outer diameter of the pin of the male member 140 on the bonnet arm side inserted forward indicated by the arrow X almost matches the bifurcated fork spacing, the bonnet 11 can be opened. The stability of the bonnet 11 when it is in use is improved.

The pin base of the male member 140 on the bonnet arm side is thicker than the tip of the pin so that the male member 140 on the bonnet arm side, which is inserted forward into the female member 150 indicated by the arrow X, does not come off to the front side. May be adopted.

Of course, the male member 140 on the bonnet arm side is not inserted into the female member 150 in the forward direction indicated by the arrow X, but the rod tip itself of the other end 102 of the bonnet arm 100 is oriented toward the patchon insertion. It may be inserted into the female member 150 upward indicated by Y, or may be locked to the inner wall of the bonnet 11.

Next, the configuration and operation of the rice transplanter according to the present embodiment will be described more specifically with reference to FIGS. 5 to 7.

Here, FIG. 5 is a left side view of a portion near the traveling wheel 51 of the rice transplanter of the modified example of the embodiment of the present invention, and FIG. 6 is a traveling wheel 51 of the rice transplanter of the modified example of the embodiment of the present invention. It is a partial rear view of the vicinity, and FIG. 7 is a partial plan view of the vicinity of the traveling wheel 51 of the rice transplanter of the modified example of the embodiment of the present invention.

The first reinforcing pipe member 210 is a welding nut 242 that is inserted and fastened to the inside of the U-shaped plate 241 and is fixed to the support pipe frame member 240 together with a so-called front plate guard. Since there is a gap inside the U-shaped plate 241, the welding nut 242 can be easily inserted.

The mounting plate 222 of the first reinforcing pipe member 210 and the second reinforcing pipe member 220 is fixed to the inside of the spare seedling frame support plate member 230 in the front-rear direction of the working machine main body. The mounting plate 222 may be a plate bent into a substantially L shape, but may be a plate having a simpler structure.

A mounting stay 221 into which the second reinforcing pipe member 220 is inserted is provided inside the support pipe frame member 240 in the front-rear direction of the working machine main body. The mounting stay 221 may be a normal mounting plate, but may be a plate having a simpler structure.

The working machine in the present invention can eliminate the troublesome removal of the bonnet from the working machine main body for maintenance work, and is useful for a work machine such as a rice transplanter.

10 Work machine body 11 Bonnet 12 Light harness 20 Engine 30 Fuel tank 40 Transmission case 50 Traveling device 51 Traveling wheel 60 Ground leveling float device 70 Planting device 80 Spare seedling frame stand 90 Handle structure 91 Handle 92 Main speed change lever 100 Bonnet arm 101 One end 101a Compression spring 101b Compression spring retaining 102 Other end 110 Bonnet arm fixture 120 Bonnet arm holder 130 Work machine body side male member 140 Bonnet arm side male member 150 Female member 160 Control panel 210 First reinforcing pipe member 220 Second reinforcing pipe member 221 Mounting stay 222 Mounting plate 230 Spare seedling frame Support plate member 240 Support pipe frame member 241 U-shaped plate 242 Welding nut

Claims (3)

A bonnet (11) that covers the engine (20) and is attached to the work machine body (10) so that it can be opened and closed.
A bonnet arm (100) that is laid down when the bonnet (11) is closed and stands up when the bonnet (11) is open to support the opened bonnet (11) from below.
A bonnet arm holder (120) attached to the work machine main body (10), which engages with the bonnet arm (100) when the bonnet arm (100) is laid down,
With
One end (101) of the bonnet arm (100) is rotatably attached to the bonnet arm attachment (110) fixed to the working machine main body (10).
A work machine characterized in that the bonnet arm holder (120) and the control panel (160) are located opposite to each other with respect to a straight line in the front-rear direction of the work machine body passing through the bonnet arm attachment (110) in a top view. .. A male member (130) on the work machine body side attached to the work machine body (10),
A male member (140) on the bonnet arm side attached to the other end (102) of the bonnet arm (100),
A female member (150) attached to the bonnet (11) and
With
When the bonnet (11) is closed, the male member (130) on the working machine body side is inserted into the female member (150).
When the bonnet (11) is opened and the bonnet arm (100) is erected, the male member (140) on the bonnet arm side is inserted into the female member (150).
The work machine according to claim 1, wherein the insertion direction of the male member (140) on the bonnet arm side is different from the insertion direction of the male member (130) on the main body side of the work machine. The working machine according to claim 2, wherein the shape of the female member (150) is the shape of a bifurcated fork that opens downward.